Q: Is 851 a Prime Number?
A: No, 851 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 851 can be evenly divided by 1 23 37 and 851, with no remainder.
Since 851 cannot be divided by just 1 and 851, it is not a prime number.